AWStats is a free, powerful and feature full server logfile analyzer that shows you all your Web/Mail/FTP statistics including visits, unique visitors, pages, hits, rush hours, operating system, browsers, search engines, keywords, robots visits, broken links and more.

A full log analysis enables AWStats to show you the following information:

• Number of visits, and number of unique visitors,
• Visits duration and last visits,
• Authenticated users, and last authenticated visits,
• Days of week and rush hours (pages, hits, KB for each hour and day of week),
• Domains/countries of hosts visitors (pages, hits, KB, 269 domains/countries detected, GeoIp detection),
• Hosts list, last visits and unresolved IP addresses list,
• Most viewed, entry and exit pages,
• Files type,
• Web compression statistics (for mod_gzip or mod_deflate),
• OS used (pages, hits, KB for each OS, 35 OS detected),
• Browsers used (pages, hits, KB for each browser, each version (Web, Wap, Media browsers: 97 browsers, more than 450 if using browsers_phone.pm library file),
• Visits of robots (319 robots detected),
• Worms attacks (5 worm's families),
• Search engines, keyphrases and keywords used to find your site (The 115 most famous search engines are detected like yahoo, google, altavista, etc...),
• HTTP errors (Page Not Found with last referrer, ...),
• Other personalized reports based on url, url parameters, referer field for miscellanous/marketing purpose,
• Number of times your site is "added to favourites bookmarks".
• Screen size (need to add some HTML tags in index page).
• Ratio of Browsers with support of: Java, Flash, RealG2 reader, Quicktime reader, WMA reader, PDF reader (need to add some HTML tags in index page).
• Cluster report for load balanced servers ratio.